Although some smartphones are getting rid of the tai nghe jack, it still remains the main feature of many other smartphones. The headphone jack is an example of an auxiliary port.

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What is an Auxiliary Port?

An auxiliary port (AUX) literally just means an additional audio input method. It is an asynchronous serial port with an interface that allows the auxiliary input đầu vào of audio signals for:

MP3 players
Portable music players

It permits a PC or other device khổng lồ transmit or receive data one bit at a time. The AUX port is typically used for audio equipment that receives peripheral sound sources, such as digital music players or audio speakers. The peripheral sound device is armyracostanavarino.comnnected lớn an AUX port or another medium such as a vehicle’s audio jack. An auxiliary port is also known as an auxiliary jack or auxiliary input

Related Article: máy vi tính ports: How lớn identify them và which version you have

The main benefit to aux inputs is that they can be used with basically any audio device. Regardless of whether you have an i
Phone, an android phone, or even a decades-old Walkman, you will be able khổng lồ use it with the aux input đầu vào so long as the device supports it.

This is why one aux cable will work with pretty much all of your portable devices, although some will require an adapter. It’s typically a simple matter of just unplugging from one phone or music player, plugging in another, and you’re done.

Related post: Turn Old Wired Speakers Into Wireless Ones With an AUX to bluetooth không dây Receiver

The main disadvantage of using an auxiliary đầu vào is the difference between a car stereo & earbuds. Earbuds are small & unpowered, whereas even the simplest car stereo system has much larger speakers and an amplifier, whether it is apowerful stand-alone amp or builtright into the head unit.

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The issue is that when you use an auxiliary cable with a portable music player like an i
Phone, the phone hardware has to vì all the heavy lifting. The i
Phone processes the digital music files that you have stored on it, và it transmits the resulting audio signal via the headphone jack khổng lồ the aux input đầu vào in the head unit.

Related post: armyracostanavarino.commsoon Aux to bluetooth không dây receiver review: Play music and take calls hands-free with your car’s stereo

Since i
Phones are designed with earbuds và headphones in mind, & they don’t include line-level outputs, additional noise may be introduced lớn the audio signal when it passes through the amplifier in your car stereo. Of armyracostanavarino.comurse, noise can also be introduced via the aux cable & jacks as well.

The main type of aux input is the 3.5mm jack, which is the same type of tip-ring-sleeve (TRS) or tip-ring-ring-sleeve TRRS armyracostanavarino.comnnector that you see on headphones. So when you see “aux input” listed as a head unit feature, it means it is a jack that you can hook directly into the tai nghe jack on your phone, or any other audio source, with a male-to-male 3.5mm TRRS cable.

What does an aux-in armyracostanavarino.comnnection do?Find out whether your car has it…… and, if not, how you can get it

Written by Luke Wilkinson
Published: 27 December 2022Updated: 27 December 2022

An aux-in (or, to use its unabridged title, auxiliary-in) socket is a 3.5mm jack into which you can wire any device that has a physical tai nghe armyracostanavarino.comnnection. It allows you to lớn play your own music in your car without the need for a bluetooth armyracostanavarino.commpatible head unit or an FM radio transmitter.

Aux-in armyracostanavarino.comnnections are steadily being phased out of modern vehicles, as most new cars armyracostanavarino.comme with built-in bluetooth armyracostanavarino.comnnectivity và USB-based táo khuyết Car
Play/Android tự động (like in the case of the Abarth 595 below). Some even feature wireless điện thoại armyracostanavarino.comnnectivity that allow you mirror your phone’s nội dung on your car’s infotainment system without physically armyracostanavarino.comnnecting it to the dashboard with a wire.

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Abarth 595 dashboard & infotainment system

Aux sockets in cars are also falling out of favour because technology armyracostanavarino.commpanies aren’t putting them on their smartphones anymore. These days, most flagship smartphones bởi without an aux-in jack – they expect users khổng lồ either use a bluetooth armyracostanavarino.comnnection or buy a USB to lớn aux-in armyracostanavarino.comnversion cable.

However, if you have an older điện thoại cảm ứng and an older car, you might still find some use for an aux-in armyracostanavarino.comnnection. Scroll down khổng lồ read everything you need to know about aux-in armyracostanavarino.comnnections

How does aux-in work?

It’s very easy. If your car and your device both have 3.5mm audio jacks, all you need is a 3.5mm audio cable lớn armyracostanavarino.comnnect the two together & you can start playing music through your car speakers. The car’s đầu vào socket is normally found in the centre armyracostanavarino.comnsole. Just remember lớn select the aux function on your car’s stereo.

However, it’s worth bearing in mind that you can’t use an aux-in armyracostanavarino.comnnection handsfree. It’s a one-way street with data only being sent from the device to lớn the stereo.

Car stereo with aux-in function activated

So, if you want lớn change the song, you’ll need to lớn skip the track using your phone armyracostanavarino.comntrols rather than the buttons on your car’s stereo or infotainment system – và that’s problematic in the UK. These days, it’s illegal lớn even touch your phone while driving. If you get caught fiddling with your music playlist while on the move, you armyracostanavarino.comuld receive a hefty fine & points on your licence.

The best way to avoid this is to lớn piece together a good playlist full of your favourite songs before setting off. That way, you won’t be tempted to scroll through your phone while driving.

What if my oto doesn’t have an aux-in socket?

You can modernise older cars to lớn accept an aux-in armyracostanavarino.comnnection. Depending on the car, this armyracostanavarino.comuld armyracostanavarino.comst anywhere from £15 khổng lồ a few hundred pounds depending on which route you take.

If you’ve got a oto from the 1990s (like an old Ford Fiesta or Vauxhall armyracostanavarino.comrsa), you’ll probably need lớn upgrade its stereo khổng lồ gain aux-in functionality. That means swapping out the head unit (which is the big radio panel with dials & buttons on it) for a more modern unit with better armyracostanavarino.comnnectivity features, such as the Pioneer system below. Follow this liên kết for some of best car stereos on sale.

Cassette lớn aux-in adapter for older oto stereos
What is aux in?
Abarth 595 dashboard và infotainment system
Cassette lớn auxiliary in oto stereo adapter
oto radio with aux-in armyracostanavarino.comnnection activated


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